"Mean Girls" screenwriter Tina (3)
I believe the answer is:
fey
'mean girls screenwriter tina' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for fey that I've seen before include "slightly mad" , "Whimsical" , "Having strange other-world charm" , "Clairvoyant or doomed in Scotland" , "Having a strange, other-worldly charm" .)